package demo06;

public class Demo01Student {
    public static void main(String[] args) {
        Student stu1=new Student();
        Student stu2=new Student("张三",20);
        stu1.show();
        stu2.show();
        stu2.setAge(21);
        stu2.setName("李四");
        stu2.show();
    }
}
